Question

Which characteristics define a liquid?

A.
definite volume, fixed shape, and no molecular motion
B.
definite volume, variable shape, and least molecular motion
C.
indefinite volume, variable shape, and high molecular motion
D.
definite volume, variable shape, and high molecular motion

Answer 1

Liquids have a definite volume, no definite shape, and their particles have high molecular motion. They assume the shape of the portion of the container they fill.

Step-by-step explanation:

The characteristics that define a liquid are:

• It has definite volume.
• It assumes the shape of its container (no definite shape).
• The particles are free to move over each other but retain close contact due to intermolecular forces.

This means a liquid will not expand to fill the entire space available to it like a gas, and it does not retain a fixed shape like a solid. Instead, it will fill the bottom of a container it is placed in and assume the shape of that portion of the container.

Therefore, the correct answer from the choices provided is D. definite volume, variable shape, and high molecular motion.

Answer 2

Answer: The correct answer is Option D.

Step-by-step explanation:

Liquid state is the second state of matter. In this state, the particles are present in random and irregular pattern. The particles are closely arranged but they can move from one place to another. The intermolecular forces between the particles are less as compared to the solid state.

The liquids have a definite volume but does not have a fixed shape as they can take up the shape of container in which they are kept.

The particles have spaces in between them, thus they have high molecular motion.

Hence, the correct answer is Option D.